Dr R L Oswald wrote: > I am in process of evaluating SL4.4 for an HPC cluster procurement and > have set up small test system. This has no firewall enabled. > > I note that by using nmap, I can see that I have two ports open that I > was not expecting to see > > 824/tcp open unknown > 4321/tcp open rwhois > > I can get a response out of each port using telnet. I have > unsuccessfully searched both your mailing archives and the system itself > for any place where the rwhois service is being started from. I can see > no daemon for it so it is perhaps implemented as a kernel service? The > unnamed port 824 is a mystery. > > Can anyone shed any light on these open ports please ? > > > Les Oswald > Cranfield University > On the machines in question, can you do a netstat -ap And look over in the last column, it should say both the process ID and the Program name. Also, do a /sbin/chkconfig --list | grep on and see what services are on. Troy -- __________________________________________________ Troy Dawson [log in to unmask] (630)840-6468 Fermilab ComputingDivision/CSS CSI Group __________________________________________________